Agricultural Science 2022 Jamb Examination
Agricultural Science 2022 Jamb Examination
Question 41
Which of the following is not an organic manure?
Organic manures are derived from plant or animal matter, such as green manure, farmyard manure, and compost. Fertilisers are generally chemical compounds added to soil to supply nutrients and are not considered organic.
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Question 42
The botanical name of maize is
The scientific (botanical) name of maize is Zea mays. Corn seed is a common name, Rattus rattus is the scientific name of a rat, and Discorea spp refers to yam species.
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Question 43
Which of these operations comes first in cultural practice?
Stumping is the process of clearing tree stumps and large vegetation before other farm operations begin. Tillage and ridge formation come after clearing, and harvesting occurs at the end of the crop cycle.
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Question 44
Cultural practices can be classified into the following except
Cultural practices are grouped into pre-planting, planting, and post-planting operations. 'In-planting operations' is not a recognised classification.
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Question 45
Which of the following is not a pre-planting operations?
Thinning is a post-planting operation to remove excess seedlings and ensure proper spacing. Land clearing, stumping, and farm layout are all pre-planting operations.
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Question 46
Water yam is also known as
Dioscorea alata is commonly known as water yam, characterised by high moisture content. Dioscorea cayenesis, Dioscorea rotundata, and Dioscorea bulbifera refer to other yam species.
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Question 47
Legumes that produce edible seeds are known as
Pulses are edible seeds of leguminous plants, such as beans, lentils, and peas. Grains and cereals are from grasses, and beverages are consumables like tea or coffee.
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Question 48
_________ is concerned with the study of the inter-relationships between groups of organisms living together in an area
Synecology studies interactions between groups of organisms in a community, while autecology focuses on individual organisms. Ecosystem refers to the environment, and ecology is the broader study of organisms and their environment.
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Question 49
___________ consists of living factors(plants and animals) interacting with the non-living factors in a farm environment
An ecosystem comprises biotic (plants, animals) and abiotic (soil, water, climate) components interacting together. Ecology is the scientific study of such interactions, surroundings refer to the environment, and community refers only to living organisms.
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Question 50
Which of the followings is not an abiotic components of an ecosystem?
Abiotic components are non-living elements such as temperature, oxygen, and topography. Micro-organisms are living entities, making them biotic components.
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